package PTA;

public class CheckPassword {
	public static void main(String[] args) {
	    // Prompt the user to enter a password
	    java.util.Scanner input = new java.util.Scanner(System.in);
	    //System.out.print("Enter a string for password: ");
	    String s = input.nextLine();

	    if (isValidPassword(s)) {
	      System.out.println("Valid password");
	    }
	    else {
	      System.out.println("Invalid password");
	    }
	    input.close();
	  }

	  /** Check if a string is a valid password */
	  public static boolean isValidPassword(String s) {
	    // Only letters and digits?
	    for (int i = 0; i < s.length(); i++) {
	      if (!Character.isLetter(s.charAt(i)) && 
	          !Character.isDigit(s.charAt(i)))
	        return false;
	    }
	    
	    // Check length
	    if (s.length() < 8)
	      return false;
	    
	    // Count the number of digits
	    int count = 0;
	    for (int i = 0; i < s.length(); i++) {
	      if (Character.isDigit(s.charAt(i)))
	        count++;
	    }
	    
	    if (count >= 2)
	      return true;
	    else 
	      return false;
	  }
}

